Crown block



G. J. CORMIER CROWN BLOCK I March 11, 1930.

Filed June 28, 1928 FTTORA/EX Patented Mar. 11, 1930 PATENT OFFICE GUSTAVE J'. CORIMIER, OF SEMINOLE, OKLAHOMA CROWN BLOCK Application filed June 28,

This invention relates to a crown block which is positioned on top of an oil well derrick and the lines from the travelling block and engine extend over the same in the usual and well-known manner.

An object of my invention is to provide a crown block which is simple in construction, is easily and quickly assembled, and is very sturdy in construction.

Other objects, advantages, and features of invention may appear from the accompanying drawing, the subjoined detailed description, and the appended claims.

In the drawing;

Fig. l is a plan view of my crown block.

Fig. 2 is a side view of the same.

Fig. 3 is an end view.

Referring more particularly to the drawmg:

My crown block 1 comprises a plurality of beam plates 2, said beam plates being spaced apart by spacing blocks 3, 4L placed at both ends of the beams and between adjacent pairs, as shown in Fig. 1. Angle plates 5, 6 are placed at both ends of the beams 2 and extend entirely across the ends so as to provide a seat in which the beams rest. The angle plates 5, 6 extend slightly over the sides of the outer beams and bolts 7 7 extend through the beams and angle plates, thus securely holding the same in assembled position.

The spacing blocks 3, 4 are preferably held securely in position in the following manner:' A bolt 8 extends through the lowermost end of the block and through the beams 2 and the angle plates 5 or 6 and a bolt 9 exextends through the upper-most end of the spacing blocks and through the beams. Thus it will be seen that the beams are rigidly held in position and are thoroughly reinforced by means of the spacing blocks and angle plates at the ends thereof. The outer-most plates 2 are preferably of I-beam construction although, if desired, these plates may be uniform in cross-section the same as the intermediate plates.

A plurality of sheaves 10 are positioned between adjacent pairs of plates 2 and are mounted on the top thereof. Each of the sheaves are journaled on a pin 11, which pin 1928. Serial No. 289,013.

is held in position by means of clamps 12 which are bolted to the top of the plates 2. I preferably staggered the sheaves 10, as shown in Fig. 1, although any desirable positioning of the sheaves can be arranged.

Having described my invention, I claim:

1. A crown block comprising a plurality of beam plates, spacing blocks positioned between adjacent plates, bolts extending through the plates and spacing blocks, sheaves mounted between adjacent pairs of plates, a pin upon which each sheave is journaled, and clamps extending over the pins and secured to the top of the beam plates, and angle plates positioned at both ends of the beam plates in which said beam plates are adapted to rest, and bolts extending through the beam plates and angle plates.

2. A crown block comprising a plurality of spaced beam plates, spacing blocks between adjacent pairs of beam plates, a bolt extending through both ends of the blocks and through the beam plates, angle plates positioned at both ends of the beam plates, bolts extending through the angle plates and beam plates, a plurality of sheaves mounted between adjacent pairs of beam plates, and means to mount said sheaves on the beam plates.

3. A crown block comprising a plurality of spaced beam plates, spacing blocks between adjacent pairs of beam plates, a bolt extending through both ends of the blocks and through the beam plates, angle plates positioned at both ends of the beam plates, bolts extending through the angle plates and beam plates, a plurality of sheaves mounted between ad acent pairs of beam plates, and means to mount said sheaves 0n the beam plates, said means comprising a pin upon which each sheave is j ournaled, said pin being adapted to rest on top of adjacent pairs of beam plates, and clamps bolted to the top of the beam plates and over the pins to hold said pins securely in position.

In testimony whereof, I affix my signature.

GUSTAVE J. CORMIER. 

